Really nice work!

Really cool.  I like the animation style.  Sorta Dr. Kat's/Home movies meets pixel art.  Real nice and fluid.  The only thing I can think to suggest is to lighten the red you're using for the AA on the hose to the tank.  Because of how dark it is, when zoomed out, you can hardly tell a difference in color.  I'd either remove it, as is it just seems like wasted color, or lighten it so you can tell a, slight but existing, contrast.  Overall, though, this is awesome!  Your work is all amazing!